Quick answers
- Is CVE-2026-89001 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-89001 being exploited in the wild.
- How severe is CVE-2026-89001?
- Informational severity, published 27 September 2026.
- Which products and versions are affected?
- WPeMatico RSS Feed Fetcher before 2.8.27.
- Is there a fix for CVE-2026-89001?
- A patch was published on 2026-09-27: version 2.8.27 available Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-89001 attacked?
- It is attacked over the network, in a software library.
- Am I affected by CVE-2026-89001?
- Check whether you run WPeMatico RSS Feed Fetcher at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
The plugin does not validate publishing and authorship permissions in its campaign settings functionality, allowing privilege escalation via broken access control (CWE-269). Users with contributor-level access can execute feed campaigns to publish live posts and set arbitrary registered users, including admins, as post authors without authorization. This requires an authenticated attacker but no additional user interaction; the vulnerability is fixed in version 2.8.27.
Affected products
- WPeMatico WPeMatico RSS Feed Fetcher before 2.8.27
Timeline
- 2026-09-25: disclosed
- 2026-09-27: patched: version 2.8.27 available